Improvement in sewing-machines



W. WINTER.

Sewing Machine. No- 88,936. Patented April 13, 1869.

N. PETERS, Photo-Lithographer, Washingmn. DV (1.

imited fitatet @atwt WILLIAM WINTER, OF LEEDS/ENGLAND.

Letters Patent No. 88,936, dated April 13, 1869.

DEPROVEMENT IN SEWING-:MACHINES.

Theflchedule referred to in these Letters Patent and making part of the same.

. To all whom it may oortoem is a full and exact description thereof, reference being had to the accompanying drawings, and to the letters of reference marked thereon; that is to say- The improvements consist in the construction, application, and use of seli compensating-levers, -or levers which compensate for the wear of the joints, or connecting parts.

Heretofore, in the working or these machines, by the constant reciprocation of the needle-bars and shuttie-drivers, the joints wear away quickly, requiring fre quent repairs.

N ow, to remedy this evil, I formthe lever-arm, which connects therewith in two 3 parts, or in two prongs,-the one having a tendency to spring off from the other.

These parts, or prongs, are (when the said levers are applied) pressed together, and inserted into a slot-hole, formed in the needle-bar, and same with respect to the shuttle-driver, so that, as the'holes or the lever-swear, the expansive tendency of these levers will always compensate therefor, and thus, not only avoid frequent repairs, but prevent the olacking sound produced by the worn or loose-iitting joints, and will also give elasticity in the action, or working of those parts of sewing-machines, and thereby diminish the liability to break off the thread.

in order that this invention may be clearly understood, 1 herein give reference to an accompanying sheet of drawings of a sewing machine constructed in accordance therewith.

Description of the Drawings.

Figure lis a side elevation, partly in section, and

Figure 2 is a plan of the same.

The general arrangement and action-of this machine are similar to others in ordinary use, which, being well known, it is not-deemed necessary to refer to all the parts thereof.

Theparticular parts of the machine, ,wherein are shown my improvements, are asfollows:

The ordinary plate-cam A, and the boss-cam B, both fixed upon the same shaft, may be either cast toseparate, but fixed op the same shaft, as shown more clearly at fig. 2 of these drawings.

The former, placed or arranged so as to actuate the lever D, which is hinged to the arm of the machine in the usual manner, and by which reciprocatory-motion is given to the needle-carrier E.

The latter actuates the lever G, hinged under the bed, by the action of; which the shuttle H is actuated or driven.

This lever acts directly on the shuttle-tamer,- or propeller I, by passing through a slot-hole formed connecting the parts together, whereby sewing-machines are very much simplified in construction, and rendered more efiicient and durable, beside the original costs thereof being greatly diminished.

Figure 3 is a plan of the compensating-lever, constructed according to the second part of the said invention. V

This. lever is:made in two parts, and attached together, (or may be in one part,) with a slit, and of spring-temper, or having a tendency to remain in an together when inserted into the slot-hole of the needlebar, or the shuttle-driver, so that, asthe holes or the levers wear, this expansive tendency of the lever will compensate for such wear.

I claim the combination of the needle-working arm D, needle-bar E, shuttle-lever G, and shuttle-carrier 1, operating together, and when the said needle-arm D and shuttle-lever G are constructed so as to -connect, respectively, with the needle-bar and shuttlecarrier by a divided end,.such division being made so as to form a spring upon the end of the respective 1eherein set forth.

WM. WINTER. Witnesses:

CLARK SMITH,

United States Consul, Leeds. "VM. TASKER, v

Patent Agent, Halifax and Bradford.

gether, or attached, one to the other, or may he formedtherein, thus requiring no joints, cotters, or pins in expanded state, yet capable of the ends being pressed vers, substantially in the manner and for the purpose 

